codecheck: Remove UB of ch8 usertests #140

user/src/bin/adder.rs

@@ -6,6 +6,7 @@ extern crate user_lib;
 extern crate alloc;
 
 use alloc::vec::Vec;
+use core::ptr::addr_of_mut;
 use user_lib::{exit, get_time, thread_create, waittid};
 
 static mut A: usize = 0;
@@ -14,7 +15,7 @@ const THREAD_COUNT_DEFAULT: usize = 16;
 static mut PER_THREAD: usize = 0;
 
 unsafe fn critical_section(t: &mut usize) {
-    let a = &mut A as *mut usize;
+    let a = addr_of_mut!(A);
     let cur = a.read_volatile();
     for _ in 0..500 {
         *t = (*t) * (*t) % 10007;

user/src/bin/adder_atomic.rs

@@ -6,6 +6,7 @@ extern crate user_lib;
 extern crate alloc;
 
 use alloc::vec::Vec;
+use core::ptr::addr_of_mut;
 use core::sync::atomic::{AtomicBool, Ordering};
 use user_lib::{exit, get_time, thread_create, waittid, yield_};
 
@@ -16,7 +17,7 @@ const THREAD_COUNT_DEFAULT: usize = 16;
 static mut PER_THREAD: usize = 0;
 
 unsafe fn critical_section(t: &mut usize) {
-    let a = &mut A as *mut usize;
+    let a = addr_of_mut!(A);
     let cur = a.read_volatile();
     for _ in 0..500 {
         *t = (*t) * (*t) % 10007;

user/src/bin/adder_mutex_blocking.rs

@@ -6,6 +6,7 @@ extern crate user_lib;
 extern crate alloc;
 
 use alloc::vec::Vec;
+use core::ptr::addr_of_mut;
 use user_lib::{exit, get_time, thread_create, waittid};
 use user_lib::{mutex_blocking_create, mutex_lock, mutex_unlock};
 
@@ -15,7 +16,7 @@ const THREAD_COUNT_DEFAULT: usize = 16;
 static mut PER_THREAD: usize = 0;
 
 unsafe fn critical_section(t: &mut usize) {
-    let a = &mut A as *mut usize;
+    let a = addr_of_mut!(A);
     let cur = a.read_volatile();
     for _ in 0..500 {
         *t = (*t) * (*t) % 10007;

user/src/bin/adder_mutex_spin.rs

@@ -6,6 +6,7 @@ extern crate user_lib;
 extern crate alloc;
 
 use alloc::vec::Vec;
+use core::ptr::addr_of_mut;
 use user_lib::{exit, get_time, thread_create, waittid};
 use user_lib::{mutex_create, mutex_lock, mutex_unlock};
 
@@ -15,7 +16,7 @@ const THREAD_COUNT_DEFAULT: usize = 16;
 static mut PER_THREAD: usize = 0;
 
 unsafe fn critical_section(t: &mut usize) {
-    let a = &mut A as *mut usize;
+    let a = addr_of_mut!(A);
     let cur = a.read_volatile();
     for _ in 0..500 {
         *t = (*t) * (*t) % 10007;

user/src/bin/adder_peterson_spin.rs

@@ -2,13 +2,13 @@
 
 #![no_std]
 #![no_main]
-#![feature(core_intrinsics)]
 
 #[macro_use]
 extern crate user_lib;
 extern crate alloc;
 
 use alloc::vec::Vec;
+use core::ptr::{addr_of, addr_of_mut, read_volatile};
 use core::sync::atomic::{compiler_fence, Ordering};
 use user_lib::{exit, get_time, thread_create, waittid};
 
@@ -20,7 +20,7 @@ const THREAD_COUNT_DEFAULT: usize = 2;
 static mut PER_THREAD: usize = 0;
 
 unsafe fn critical_section(t: &mut usize) {
-    let a = &mut A as *mut usize;
+    let a = addr_of_mut!(A);
     let cur = a.read_volatile();
     for _ in 0..500 {
         *t = (*t) * (*t) % 10007;
@@ -39,7 +39,7 @@ unsafe fn lock(id: usize) {
     // Otherwise the compiler will assume that they will never
     // be changed on this thread. Thus, they will be accessed
     // only once!
-    while vload!(&FLAG[j]) && vload!(&TURN) == j {}
+    while read_volatile(addr_of!(FLAG[j])) && read_volatile(addr_of!(TURN)) == j {}
 }
 
 unsafe fn unlock(id: usize) {

user/src/bin/adder_peterson_yield.rs

@@ -2,14 +2,16 @@
 
 #![no_std]
 #![no_main]
-#![feature(core_intrinsics)]
 
 #[macro_use]
 extern crate user_lib;
 extern crate alloc;
 
 use alloc::vec::Vec;
-use core::sync::atomic::{compiler_fence, Ordering};
+use core::{
+    ptr::addr_of_mut,
+    sync::atomic::{compiler_fence, Ordering},
+};
 use user_lib::{exit, get_time, thread_create, waittid, yield_};
 
 static mut A: usize = 0;
@@ -20,7 +22,7 @@ const THREAD_COUNT_DEFAULT: usize = 2;
 static mut PER_THREAD: usize = 0;
 
 unsafe fn critical_section(t: &mut usize) {
-    let a = &mut A as *mut usize;
+    let a = addr_of_mut!(A);
     let cur = a.read_volatile();
     for _ in 0..500 {
         *t = (*t) * (*t) % 10007;

user/src/bin/adder_simple_spin.rs

@@ -1,12 +1,12 @@
 #![no_std]
 #![no_main]
-#![feature(core_intrinsics)]
 
 #[macro_use]
 extern crate user_lib;
 extern crate alloc;
 
 use alloc::vec::Vec;
+use core::ptr::{addr_of, addr_of_mut, read_volatile};
 use user_lib::{exit, get_time, thread_create, waittid};
 
 static mut A: usize = 0;
@@ -16,7 +16,7 @@ const THREAD_COUNT_DEFAULT: usize = 16;
 static mut PER_THREAD: usize = 0;
 
 unsafe fn critical_section(t: &mut usize) {
-    let a = &mut A as *mut usize;
+    let a = addr_of_mut!(A);
     let cur = a.read_volatile();
     for _ in 0..500 {
         *t = (*t) * (*t) % 10007;
@@ -25,7 +25,7 @@ unsafe fn critical_section(t: &mut usize) {
 }
 
 unsafe fn lock() {
-    while vload!(&OCCUPIED) {}
+    while read_volatile(addr_of!(OCCUPIED)) {}
     OCCUPIED = true;
 }
 

user/src/bin/adder_simple_yield.rs

@@ -1,12 +1,12 @@
 #![no_std]
 #![no_main]
-#![feature(core_intrinsics)]
 
 #[macro_use]
 extern crate user_lib;
 extern crate alloc;
 
 use alloc::vec::Vec;
+use core::ptr::addr_of_mut;
 use user_lib::{exit, get_time, thread_create, waittid, yield_};
 
 static mut A: usize = 0;
@@ -16,7 +16,7 @@ const THREAD_COUNT_DEFAULT: usize = 16;
 static mut PER_THREAD: usize = 0;
 
 unsafe fn critical_section(t: &mut usize) {
-    let a = &mut A as *mut usize;
+    let a = addr_of_mut!(A);
     let cur = a.read_volatile();
     for _ in 0..500 {
         *t = (*t) * (*t) % 10007;

user/src/bin/eisenberg.rs

@@ -1,6 +1,5 @@
 #![no_std]
 #![no_main]
-#![feature(core_intrinsics)]
 
 #[macro_use]
 extern crate user_lib;
@@ -8,7 +7,10 @@ extern crate alloc;
 extern crate core;
 
 use alloc::vec::Vec;
-use core::sync::atomic::{AtomicUsize, Ordering};
+use core::{
+    ptr::{addr_of, addr_of_mut, read_volatile, write_volatile},
+    sync::atomic::{AtomicUsize, Ordering},
+};
 use user_lib::{exit, sleep, thread_create, waittid};
 
 const N: usize = 2;
@@ -38,19 +40,19 @@ fn critical_test_exit() {
     assert_eq!(GUARD.fetch_sub(1, Ordering::SeqCst), 1);
 }
 
-fn eisenberg_enter_critical(id: usize) {
+unsafe fn eisenberg_enter_critical(id: usize) {
     /* announce that we want to enter */
     loop {
         println!("Thread[{}] try enter", id);
-        vstore!(&FLAG[id], FlagState::Want);
+        write_volatile(addr_of_mut!(FLAG[id]), FlagState::Want);
         loop {
             /* check if any with higher priority is `Want` or `In` */
             let mut prior_thread: Option<usize> = None;
-            let turn = vload!(&TURN);
+            let turn = read_volatile(addr_of!(TURN));
             let ring_id = if id < turn { id + THREAD_NUM } else { id };
             // FLAG.iter() may lead to some errors, use for-loop instead
             for i in turn..ring_id {
-                if vload!(&FLAG[i % THREAD_NUM]) != FlagState::Out {
+                if read_volatile(addr_of!(FLAG[i % THREAD_NUM])) != FlagState::Out {
                     prior_thread = Some(i % THREAD_NUM);
                     break;
                 }
@@ -66,13 +68,13 @@ fn eisenberg_enter_critical(id: usize) {
             sleep(1);
         }
         /* now tentatively claim the resource */
-        vstore!(&FLAG[id], FlagState::In);
+        write_volatile(addr_of_mut!(FLAG[id]), FlagState::In);
         /* enforce the order of `claim` and `conflict check`*/
         memory_fence!();
         /* check if anthor thread is also `In`, which imply a conflict*/
         let mut conflict = false;
         for i in 0..THREAD_NUM {
-            if i != id && vload!(&FLAG[i]) == FlagState::In {
+            if i != id && read_volatile(addr_of!(FLAG[i])) == FlagState::In {
                 conflict = true;
             }
         }
@@ -83,28 +85,28 @@ fn eisenberg_enter_critical(id: usize) {
         /* no need to sleep */
     }
     /* clain the trun */
-    vstore!(&TURN, id);
+    write_volatile(addr_of_mut!(TURN), id);
     println!("Thread[{}] enter", id);
 }
 
-fn eisenberg_exit_critical(id: usize) {
+unsafe fn eisenberg_exit_critical(id: usize) {
     /* find next one who wants to enter and give the turn to it*/
     let mut next = id;
     let ring_id = id + THREAD_NUM;
     for i in (id + 1)..ring_id {
         let idx = i % THREAD_NUM;
-        if vload!(&FLAG[idx]) == FlagState::Want {
+        if read_volatile(addr_of!(FLAG[idx])) == FlagState::Want {
             next = idx;
             break;
         }
     }
-    vstore!(&TURN, next);
+    write_volatile(addr_of_mut!(TURN), next);
     /* All done */
-    vstore!(&FLAG[id], FlagState::Out);
+    write_volatile(addr_of_mut!(FLAG[id]), FlagState::Out);
     println!("Thread[{}] exit, give turn to {}", id, next);
 }
 
-pub fn thread_fn(id: usize) -> ! {
+pub unsafe fn thread_fn(id: usize) -> ! {
     println!("Thread[{}] init.", id);
     for _ in 0..N {
         eisenberg_enter_critical(id);

user/src/bin/peterson.rs

@@ -1,6 +1,5 @@
 #![no_std]
 #![no_main]
-#![feature(core_intrinsics)]
 
 #[macro_use]
 extern crate user_lib;
@@ -8,6 +7,7 @@ extern crate alloc;
 extern crate core;
 
 use alloc::vec::Vec;
+use core::ptr::{addr_of, addr_of_mut, read_volatile, write_volatile};
 use core::sync::atomic::{AtomicUsize, Ordering};
 use user_lib::{exit, sleep, thread_create, waittid};
 const N: usize = 1000;
@@ -28,12 +28,12 @@ fn critical_test_exit() {
     assert_eq!(GUARD.fetch_sub(1, Ordering::SeqCst), 1);
 }
 
-fn peterson_enter_critical(id: usize, peer_id: usize) {
+unsafe fn peterson_enter_critical(id: usize, peer_id: usize) {
     // println!("Thread[{}] try enter", id);
-    vstore!(&FLAG[id], true);
-    vstore!(&TURN, peer_id);
+    write_volatile(addr_of_mut!(FLAG[id]), true);
+    write_volatile(addr_of_mut!(TURN), peer_id);
     memory_fence!();
-    while vload!(&FLAG[peer_id]) && vload!(&TURN) == peer_id {
+    while read_volatile(addr_of!(FLAG[peer_id])) && read_volatile(addr_of!(TURN)) == peer_id {
         // println!("Thread[{}] enter fail", id);
         sleep(1);
         // println!("Thread[{}] retry enter", id);
@@ -41,12 +41,12 @@ fn peterson_enter_critical(id: usize, peer_id: usize) {
     // println!("Thread[{}] enter", id);
 }
 
-fn peterson_exit_critical(id: usize) {
-    vstore!(&FLAG[id], false);
+unsafe fn peterson_exit_critical(id: usize) {
+    write_volatile(addr_of_mut!(FLAG[id]), false);
     // println!("Thread[{}] exit", id);
 }
 
-pub fn thread_fn(id: usize) -> ! {
+pub unsafe fn thread_fn(id: usize) -> ! {
     // println!("Thread[{}] init.", id);
     let peer_id: usize = id ^ 1;
     for iter in 0..N {

user/src/bin/race_adder_arg.rs

@@ -7,6 +7,7 @@ extern crate alloc;
 
 use crate::alloc::string::ToString;
 use alloc::vec::Vec;
+use core::ptr::addr_of_mut;
 use user_lib::{exit, get_time, thread_create, waittid};
 
 static mut A: usize = 0;
@@ -16,7 +17,7 @@ const THREAD_COUNT: usize = 16;
 unsafe fn f(count: usize) -> ! {
     let mut t = 2usize;
     for _ in 0..PER_THREAD {
-        let a = &mut A as *mut usize;
+        let a = addr_of_mut!(A);
         let cur = a.read_volatile();
         for _ in 0..count {
             t = t * t % 10007;

user/src/lib.rs

@@ -2,7 +2,6 @@
 #![feature(linkage)]
 #![feature(panic_info_message)]
 #![feature(alloc_error_handler)]
-#![feature(core_intrinsics)]
 
 #[macro_use]
 pub mod console;